Thanks for your replies.
However, I would like to hear from someone who is actually using it. I currently own an Access Point from Linksys and it also has configuration for Radius, but it doesn't support a proper protocol and so it doesn't work with any current Radius server...
Another note: I just upgraded from Windows Server 2003 to 2008 and, unlike the workstation Vista, I actually like it. Even though it is newer it is already stable.
Thanks,
Jens